just a few questions about wiring

there should be at least two o2s, one before cat and one after. the rear one just monitors the function of the cat, so even though it will throw a code, it doesn't effect the engine. your really need to get a pcm from a wrecking yard around the same year as your life will be a lot easier. lol. the swap is very simple to make run, and if I can help just holler. dave.